Daewoo Matiz (2003 year). Manual — part 108
WHEEL ALIGNMENT 2B – 3
STEERING AXIS INCLINATION
Steering Axis Inclination (SAI) is the tilt at the top of the
steering knuckle from the vertical. Measure the SAI
angle from the true vertical to a line through the center of
the strut and the lower ball joint as viewed from the front
of the vehicle.
SAI helps the vehicle track straight down the road and
assists the wheel back into the straight ahead position.
SAI on front wheel drive vehicles should be negative.
INCLUDED ANGLE
The included angle is the angle measured from the cam-
ber angle to the line through the center of the strut and
the lower ball joints as viewed from the front of the ve-
hicle.
The included angle is calculated in degrees Most align-
ment racks will not measure the included angle directly.
To determine the included angle, subtract the negative
or add the positive camber readings to the Steering Axis
Inclination (SAI).
SCRUB RADIUS
The scrub radius is the distance between true vertical
and the line through the center of the strut and lower ball
joint to the road surface. Scrub radius is bulit into the de-
sign of the vehicle. Scrub radius is not adjustable.
SETBACK
The setback is the distance in which one front hub and
bearing assembly may be rearward of the other front
hub and bearing assembly. Setback is primarily caused
by a road hazard or vehicle collision.
TURNING ANGLE
The turning angle is the angle of each front wheel to the
vertical when the vehicle is making a turn.
2B – 4 WHEEL ALIGNMENT
DIAGNOSTIC INFORMATION AND PROCEDURES
TIRE DIAGNOSIS
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Condition
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁ
Probable cause
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Correction
Irregular and Excessive
Tire Wear
D
Incorrect inflation pressure.
D
Inflate the tires to the proper
pressure.
D
Inbalanced wheel.
D
Balance the wheel.
D
Replace the wheel.
D
A lack of regular rotation.
D
Rotate the tires.
D
Incorrect alignment.
D
Align the front and rear wheels.
Premature Tire Wear
D
Excessive inflation pressure.
D
Inflate the tires to the proper
pressure.
D
High speed driving with the low
inflation pressure.
D
Inflate the tires to the proper
pressure.
Uneven Braking
D
Inbalanced inflation pressure.
D
Inflate the tires to the proper
pressure.
D
Irregular tire wear.
D
Replace the tires.
Noise and Vibration of
The Body
D
Low inflation pressure.
D
Inflate the tires to the proper
pressure.
D
Inbalanced wheel.
D
Balance the wheel.
D
Replace the wheel.
D
Damaged wheel or tire.
D
Replace the wheel and the tire.
D
Irregular tire wear.
D
Replace the tire.
Vibration of The Steering
D
Irregular tire wear.
D
Replace the tire.
Wheel
D
Inbalanced inflation pressure.
D
Inflate the tires to the proper
pressure.
D
Damaged tire.
D
Replace the tire.
D
Bent or damaged wheel.
D
Replace the wheel.
WHEEL ALIGNMENT 2B – 5
FRONT TOE ADJUSTMENT
1. Separate the clamps from the both rack and pinion
boots.
2. Loosen the right and the left tie rod end lock nuts.
3. Turn the right and the left tie rod to align the toe.
In this adjustment, the right and left tie rods must be
equal in length.
ÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁ
Front Toe–In
ÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁ
10
′
±
10
′
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
Rotation Number of Tie Rod
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
Difference of Toe–In
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1/2
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
0.75 mm (0.03 in.)
ÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁ
1
ÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁ
1.5 mm (0.06 in.)
D106A303
4. Tighten the tie rod end lock nut to 45 N
S
m (33 lb-ft).
5. Install the rack and pinion boots clamp.
FRONT CAMBER AND CASTER
CHECK
The front camber and caster are not adjustable. Refer to
“Wheel Alignment Specifications” in this section. Jounce
the bumper three times before measuring the camber or
the caster in order to prevent an incorrect reading. If the
front camber or caster measurements deviate from the
specifications, locate and replace or repair any dam-
aged, loose, bent, dented, or worn suspension part. If
the problem is body related, repair the body.
REAR CAMBER CHECK
The rear camber is not adjustable. Refer to “Wheel
Alignment Specifications” in this section. If the rear cam-
ber deviates from the specification, locate the cause and
correct it. If damaged, loose, bent, dented, or worn sus-
pension parts are found, they should be repaired or re-
placed. If the problem is body related, repair the body.
REAR TOE CHECK
The rear toe is not adjustable. Refer to “Wheel Align-
ment Specifications” in this section. If the toe deviates
from the specification, check the rear axle assembly and
the wheel spindle on vehicles without an anti–lock brak-
ing system (ABS) or the rear axle assembly and the hub
and bearing assembly on vehicles with ABS for possible
damage.
2B – 6 WHEEL ALIGNMENT
SPECIFICATIONS
WHEEL ALIGNMENT SPECIFICATIONS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Application
ÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁ
Front
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁ
Rear
Camber
0
_
30
′
±
0
_
30
′
0
_
"
20
′
Caster–Manual Steering
2
_
48
′
±
30
′
–
Caster–Power Steering
2
_
48
′
±
30
′
–
Toe–in (2–person load)
10
′
±
10
′
20
′
"
20
′
FASTENER TIGHTENING SPECIFICATIONS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Application
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
N
S
m
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
Lb-Ft
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
Lb-In
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ
Tie Rod End Lock Nut
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
45
ÁÁÁÁÁÁ
ÁÁÁÁÁÁ
33
ÁÁÁÁÁÁÁ
ÁÁÁÁÁÁÁ
–
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